Soldering unit



J. W. FAY

SOLDERING UNIT Jill) 19, 1927.

Filed Aug. 9. 1924 Patented July 19, 1927.

UNITED. STATES PATENT OFFICE.

JOSEPH WILLIAM BAY, OF VILLA. PARK, ILLINOIS, ASSIGNOR TO WESTERN ELECTRIC COMPANY, INCORPORATED, 01' NEW YORK, N. Y., A. CORPORATION OF NEW YORK.

SOLDERING UNIT.

Application filed August 9, 1924. Serial No. 731,179.

This invention relates to soldering units, and more particularly to soldering units comprising solder and fiuxing material.

The object of the invention is to provide 5 soldering units composed of solder and fiuxin material in a, readily dispensable form.

n one form of the invention, a substantially spherical shell of solder encloses a core of resin and has a smooth outer surface, the amount of resin in the core being properly proportioned with respect to the amount of solder in the shell to provide a unit suitable for one soldering operation. Other objects and features of-the invention will become apparent as the detailed description progresses, reference being had to the accompanying drawing, wherein Fig. 1 is an elevation of a soldering unit embodying the invention, and a 2 i Fig. 2 is a central sectlon through the improved soldering unit.

eferring to the drawing, the reference character 10 designates in general a' soldering unit comprisin a shell 11 of solder enclosin a core 12 o resin which is employe as a fi iixing agent.

The shell 11 has a smooth spherical exterior surface 13 which imparts a pellet form to the soldering unit, and is particularly advantageous in that it permits the soldering unit to be readily dispensed by comparatively simple apparatus such as .shown in my copending applications. The

core 12 consists of a sufiicient amount of resin to properly flux the surface or surfaces to which the solder in the shell 11 may be applied. In the preferred form of the invention the vcore 12 is entirely enclosed within the shell 11 so that the fiuxing material will not escape therefrom. This insures that a plurality of soldering units of eqlgtl size and substantially identical composition ma be employed in a series of similar sol ering operations to produce an article in which, each soldered connection vis substantiall identical with the others, the surfaces of each connection being properly fiuxed and the connections being made Wit 1 an equal amount of solder.

To insure that a plurality of soldering units will be of equal size and of substantially identical composition, they are preferably produced by the method and apparatus described in my copending application, Serial No. 736,844 filed September 10, 1924. The improved method is preferably practiced by apparatus adapted to sever predetermined lengths from flux cored solder and to form the predetermined lengths into pellets ofsolder having cores of fiuxing material. -The apparatus is adapted'to form a smooth exterror surface upon each pellet.

What is claimed. is: I A spherical soldering pellet comprising a substantially spherical core of fiuxing material, and a spherical shellof solder completely sealing the core. of fiuxing material therein and presenting a smooth outer surface.

In witness whereof, I hereunto subscribe my name this 31st da of July, A. D., 1924.

' J OSEP WILLIAM FAY. 

